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test/functional/mining.py
- This file was added.
Property | Old Value | New Value |
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File Mode | null | 100755 |
#!/usr/bin/env python3 | |||||
# Copyright (c) 2014-2016 The Bitcoin Core developers | |||||
# Distributed under the MIT software license, see the accompanying | |||||
# file COPYING or http://www.opensource.org/licenses/mit-license.php. | |||||
"""Test mining RPCs | |||||
- getblocktemplate proposal mode | |||||
- submitblock""" | |||||
from binascii import b2a_hex | |||||
import copy | |||||
from test_framework.blocktools import create_coinbase | |||||
from test_framework.test_framework import BitcoinTestFramework | |||||
from test_framework.mininode import CBlock | |||||
from test_framework.util import * | |||||
def b2x(b): | |||||
return b2a_hex(b).decode('ascii') | |||||
def assert_template(node, block, expect, rehash=True): | |||||
if rehash: | |||||
block.hashMerkleRoot = block.calc_merkle_root() | |||||
rsp = node.getblocktemplate( | |||||
{'data': b2x(block.serialize()), 'mode': 'proposal'}) | |||||
assert_equal(rsp, expect) | |||||
class MiningTest(BitcoinTestFramework): | |||||
''' | |||||
Test block proposals with getblocktemplate. | |||||
''' | |||||
def __init__(self): | |||||
super().__init__() | |||||
self.num_nodes = 2 | |||||
self.setup_clean_chain = False | |||||
def run_test(self): | |||||
node = self.nodes[0] | |||||
# Mine a block to leave initial block download | |||||
node.generate(1) | |||||
tmpl = node.getblocktemplate() | |||||
self.log.info("getblocktemplate: Test capability advertised") | |||||
assert 'proposal' in tmpl['capabilities'] | |||||
assert 'coinbasetxn' not in tmpl | |||||
coinbase_tx = create_coinbase(height=int(tmpl["height"]) + 1) | |||||
# sequence numbers must not be max for nLockTime to have effect | |||||
coinbase_tx.vin[0].nSequence = 2 ** 32 - 2 | |||||
coinbase_tx.rehash() | |||||
block = CBlock() | |||||
block.nVersion = tmpl["version"] | |||||
block.hashPrevBlock = int(tmpl["previousblockhash"], 16) | |||||
block.nTime = tmpl["curtime"] | |||||
block.nBits = int(tmpl["bits"], 16) | |||||
block.nNonce = 0 | |||||
block.vtx = [coinbase_tx] | |||||
self.log.info("getblocktemplate: Test valid block") | |||||
assert_template(node, block, None) | |||||
self.log.info("submitblock: Test block decode failure") | |||||
assert_raises_jsonrpc(-22, "Block decode failed", | |||||
node.submitblock, b2x(block.serialize()[:-15])) | |||||
self.log.info( | |||||
"getblocktemplate: Test bad input hash for coinbase transaction") | |||||
bad_block = copy.deepcopy(block) | |||||
bad_block.vtx[0].vin[0].prevout.hash += 1 | |||||
bad_block.vtx[0].rehash() | |||||
assert_template(node, bad_block, 'bad-cb-missing') | |||||
self.log.info("submitblock: Test invalid coinbase transaction") | |||||
assert_raises_jsonrpc(-22, "Block does not start with a coinbase", | |||||
node.submitblock, b2x(bad_block.serialize())) | |||||
self.log.info("getblocktemplate: Test truncated final transaction") | |||||
assert_raises_jsonrpc(-22, "Block decode failed", node.getblocktemplate, | |||||
{'data': b2x(block.serialize()[:-1]), 'mode': 'proposal'}) | |||||
self.log.info("getblocktemplate: Test duplicate transaction") | |||||
bad_block = copy.deepcopy(block) | |||||
bad_block.vtx.append(bad_block.vtx[0]) | |||||
assert_template(node, bad_block, 'bad-txns-duplicate') | |||||
self.log.info("getblocktemplate: Test invalid transaction") | |||||
bad_block = copy.deepcopy(block) | |||||
bad_tx = copy.deepcopy(bad_block.vtx[0]) | |||||
bad_tx.vin[0].prevout.hash = 255 | |||||
bad_tx.rehash() | |||||
bad_block.vtx.append(bad_tx) | |||||
assert_template(node, bad_block, 'bad-txns-inputs-missingorspent') | |||||
self.log.info("getblocktemplate: Test nonfinal transaction") | |||||
bad_block = copy.deepcopy(block) | |||||
bad_block.vtx[0].nLockTime = 2 ** 32 - 1 | |||||
bad_block.vtx[0].rehash() | |||||
assert_template(node, bad_block, 'bad-txns-nonfinal') | |||||
self.log.info("getblocktemplate: Test bad tx count") | |||||
# The tx count is immediately after the block header | |||||
TX_COUNT_OFFSET = 80 | |||||
bad_block_sn = bytearray(block.serialize()) | |||||
assert_equal(bad_block_sn[TX_COUNT_OFFSET], 1) | |||||
bad_block_sn[TX_COUNT_OFFSET] += 1 | |||||
assert_raises_jsonrpc(-22, "Block decode failed", node.getblocktemplate, | |||||
{'data': b2x(bad_block_sn), 'mode': 'proposal'}) | |||||
self.log.info("getblocktemplate: Test bad bits") | |||||
bad_block = copy.deepcopy(block) | |||||
bad_block.nBits = 469762303 # impossible in the real world | |||||
assert_template(node, bad_block, 'bad-diffbits') | |||||
self.log.info("getblocktemplate: Test bad merkle root") | |||||
bad_block = copy.deepcopy(block) | |||||
bad_block.hashMerkleRoot += 1 | |||||
assert_template(node, bad_block, 'bad-txnmrklroot', False) | |||||
self.log.info("getblocktemplate: Test bad timestamps") | |||||
bad_block = copy.deepcopy(block) | |||||
bad_block.nTime = 2 ** 31 - 1 | |||||
assert_template(node, bad_block, 'time-too-new') | |||||
bad_block.nTime = 0 | |||||
assert_template(node, bad_block, 'time-too-old') | |||||
self.log.info("getblocktemplate: Test not best block") | |||||
bad_block = copy.deepcopy(block) | |||||
bad_block.hashPrevBlock = 123 | |||||
assert_template(node, bad_block, 'inconclusive-not-best-prevblk') | |||||
if __name__ == '__main__': | |||||
MiningTest().main() |